Gas boiler liquefied gas. How to choose a gas boiler using liquefied gas. Features of organizing autonomous heating using liquefied gas

Gas cylinders filled with propane-butane have long become commonplace in the kitchens of country houses. But would it be a rational decision to heat a private house using liquefied gas? Before converting your home heating system to the consumption of liquefied petroleum gas (LPG), you need to clarify several issues for yourself. Among them, the most important ones are: what will be the consumption of liquefied gas for heating the house, and how real will the benefits be?

Heating with gas from cylinders

There are often reviews that heating with liquefied gas supposedly requires huge financial expenses. There is an opinion that the purchase of gas equipment, as well as installation and maintenance of the system, is accompanied by excessive costs. But this is not always true, and year after year, heating a private house with liquefied gas in cylinders is gaining new adherents among owners of dachas and cottages.

Advantages of LPG

Possibility to arrange autonomous heating using liquefied gas at a distance from gas mains;
Ease of transportation that does not require the construction of pipelines;
Higher heat capacity of the propane-butane mixture compared to natural gas;
Environmentally friendly fuel obtained during oil production and refining;
Relatively low cost in the face of rising prices for other types of fuel.

Disadvantages of LPG

The cost of gas delivery for heating private houses with liquefied gas in cylinders may increase when the household is located too far from the city;
In frosty winter, when heating a private house with liquefied gas, the problem of freezing of the gas reducer arises;
If you create a fuel reserve in a gas tank installed on your site, then during periods of snow drifts there may be difficulties with the refueling vehicle getting to the house;
The design and installation of autonomous heating using liquefied gas is permitted only with the involvement of specialists from authorized organizations. And only the least critical elements of a liquefied gas heating system can be made with your own hands.

Features of heating with liquefied gas

The owner of a liquefied gas heating system is forced to monitor whether the fuel in the container connected to the boiler is running out. Some will consider this feature an inconvenience, but such a heating system can be autonomous and not depend on problems with the central gas supply. You just need to regularly replace gas cylinders or immediately pump a sufficient amount of gas into the underground storage.

Use of gas cylinders in heating

The option of heating a house with liquefied gas in 50-liter cylinders is ideally suited for country houses and small cottages. To avoid having to disconnect an empty cylinder every two days and connect a full one in its place, you can combine several cylinders into a battery at once. For this purpose, GOK fittings are used. If a homeowner installs liquefied gas heating with his own hands, he has the right to install a battery of no more than 3 cylinders without a project. A larger number of them will require a project.

Gas cylinders are installed not indoors, but in a metal cabinet on the outside of the house. In winter, there are often cases of reduced gas supply through the reducer due to the fact that the condensate contained in the cylinders partially freezes.

To prevent freezing of gearboxes at low temperatures, you can install a small electric heater in the cabinet with cylinders.

Gas holder for home heating

It is convenient to use cylinders when gas consumption is not too high, and their delivery service operates uninterruptedly. In other cases, it will be more rational to purchase and install a gas holder - a large underground tank for storing LPG, which will have to be filled with gas only 2-3 times a year. The volume of the gas holder can be from 3 to 10 cubic meters; it is selected in accordance with the power of the heating system.

An underground gas tank is allowed to be located no closer than 10 m from a residential building, and from the road side it must be accessible for a refueling vehicle.

Calculation of costs for the installation of autonomous gas heating

When comparing which types of heating systems will be the least expensive, you must first pay attention to the consumption of liquefied gas for heating. It is advisable to compare the upcoming costs with similar costs for other types of fuel and decide which option will be more profitable.

Initial costs for equipment and arrangement

The costs of purchasing equipment and installing an autonomous liquefied gas heating system in your home may vary slightly in different regions of residence. But in general, when compared with connecting to the main gas pipeline, the difference in cost will be insignificant. It will be more expensive only if you use not cylinders, but a gas tank with a volume of several cubic meters. Its cost will be more than 300,000 rubles.

Also, the cost of arranging premises for boilers using LPG is almost equal in cost compared to those using diesel fuel. As evidenced by reviews, heating with liquefied gas only requires higher initial costs when it serves as an alternative to solid fuel or electric heating. But during further operation, the funds invested in heating a private house with liquefied gas will gradually pay off due to the profitability of this type of fuel.

Gas costs for heating a private home

Just a few years ago, a propane-butane mixture was much more expensive than main gas (methane), but over time the price difference between them is decreasing. Therefore, relative indicators of the cost and consumption of liquefied gas for heating demonstrate the feasibility of using this energy carrier.

The simplest way to determine the real consumption of liquefied gas for heating a house is to correlate the mass of gas in one cylinder with the technological characteristics of the heating equipment. In this case, it is more convenient to calculate the consumption by mass, since the volume (in liters) depends on the density and percentage composition of the propane-butane mixture pumped into the cylinder.

A standard 50-liter cylinder can be filled with 35–40 liters of LPG, which in terms of weight gives an average of 22 kg of gas.

Let's look at a specific example to determine the required amount of liquefied gas in cylinders for heating a house with an area of 100 m²:

To heat the specified area you will need (at maximum standards) 10 kW of heat energy;
However, the boiler does not operate constantly at maximum mode, and its average load factor can be taken as 0.5. This means we need 5 kW;
With a calorific value of liquefied gas of 46 mJ/kg, to produce 1 kW of heat energy, about 0.1 kg of LPG will be consumed per hour, and for 5 kW, 0.5 kg of LPG will be required;
12 kg, or almost half of the cylinder, will be consumed per day;
The monthly consumption of liquefied gas for continuous heating of the house will be approximately 13–15 cylinders.

What will the consumption be if you do not use cylinders, but pump fuel into a gas tank? How often will you have to call a gas station to replenish the gas supply in the “five cubic meter” tank that is most common among consumers? Let's figure it out:

Any of the containers for liquefied gas is not filled “to the neck”, but only 80–85%. Accordingly, a tank with a volume of 5 m³ will contain about 4250 liters or (in terms of weight) 2300 kg of gas;
We have already determined that in our case, the liquefied gas heating system consumes 0.5 kg of fuel per hour;
We divide the total mass of gas contained in the gas tank 2300 kg by 0.5 kg/hour, and we get 4600 hours - for such a time we have enough fuel reserve;
Dividing 4600 hours by 24, we get a total of 190 days. That is, one refill of a gas tank with a volume of 5 m³ is enough to heat a 100 m² house for almost the entire heating season (in a temperate climate).

These are theoretical calculations, but in reality, fuel consumption can be significantly reduced. With the correct setting of combustion modes, a gas heating boiler for liquefied gas can consume 1.5–2 times less fuel, and the temperature in the house will be maintained at an acceptable level.

To reduce the amount of burned gas, use automation, which switches the boiler to moderate mode at night, reducing the temperature in the system by 7–9 degrees, thereby achieving a cost reduction of 30%.

Heating equipment for heating with liquefied gas

To heat a private house using liquefied gas, both heating boilers with a water circuit and gas convectors are used. But among all types of similar equipment, liquefied gas heating boilers are still in the lead, as the most productive. Reviews of liquefied gas heating using convectors are rarely positive.

Gas heating boilers for liquefied gas are almost no different in design from those that consume mains gas. The only difference is in the design of the burners, since the pressure of propane-butane coming from the cylinder is almost 2 times higher than natural methane. Accordingly, the jets in the burners also differ in internal diameter. There are also some differences in the devices for regulating the air supply.

The design differences are so insignificant that, if necessary, it is enough to just replace the burners in a boiler designed for methane, and you will not have to buy a new liquefied gas heating boiler.

Let's look at the differences between the main models of boilers for liquefied gas heating systems:

Boiler type. Among the units for heating a private house with liquefied gas in cylinders, single-circuit and double-circuit boilers are distinguished. The former serve only for the heating system, and the latter, in addition, provide hot water. The combustion chamber in boilers is designed differently; it can be open or closed. Both large floor-standing models and compact wall-mounted ones are available;
Efficiency. Judging by the reviews, heating with liquefied gas can become truly rational and economical if the gas boiler has an efficiency of at least 90-94%;
Boiler power. It is considered one of the main parameters when heating a private house with liquefied gas. It is necessary to make sure that the specifications of the unit will allow it to develop sufficient power to provide the entire area of the home with heat, but at the same time avoiding excessive consumption of liquefied gas for heating;
Manufacturer. While pipe routing in a liquefied gas heating system can be done with your own hands, a gas boiler should in no case be homemade. Moreover, it is advisable to give preference to well-established domestic or foreign manufacturers.

Liquefied gas boilers are prohibited from being installed in basements, since the propane-butane mixture is heavier than air. When leaked, such gas does not disappear, but accumulates at floor level, which can lead to an explosion.

Gas heating system maintenance

The heating system of a private house using liquefied gas requires periodic monitoring and maintenance. The trouble is if in the middle of winter the boiler suddenly stops functioning normally! Causes of malfunctions of gas heating boilers for liquefied gas

are mainly associated with a clogged burner or fuel filter. It is advisable to detect all faults in advance, and an experienced specialist should search for them.

The technician must check the condition of the liquefied gas heating boiler 1-2 times a year and carry out maintenance with the same regularity. The list of works boils down to inspecting the burners and combustion chamber, cleaning from soot and soot, checking the automation, and adjusting the equipment.

The video will demonstrate what a worthy alternative to natural gas can be liquefied petroleum gas (LPG).

In conclusion, we can add that many users are campaigning for heating with liquefied gas; their reviews indicate the effectiveness of the autonomous system. Even despite the hassle associated with periodically replacing gas cylinders.

Each cylinder gas boiler in the Technodom online store has a factory warranty, since we sell only original products from reputable brands.

Gas boilers from a cylinder (using bottled gas)

To heat a private home, liquefied gas boilers must meet all the necessary technical specifications, namely:

Power, which is decisive when heating a specific area of premises, as well as fully providing hot water supply.
Features of the model. There are a lot of differences in the installation method, closed/open combustion chamber, and the number of circuits.
Energy efficiency or efficiency. The higher these indicators, the more you will save when using such equipment.
Pressure. The lower the minimum values in the passport, the more rationally the fuel from the cylinders will be used.
Gas consumption costs. Specific consumption figures primarily depend on efficiency, power, and the effectiveness of automated controls.

First of all, for each buyer, the issues of gas consumption from a cylinder, the price of a gas boiler using liquefied gas for heating a private home, and the features of installing this equipment are of particular importance. If you have specific questions regarding the level of energy consumption, minimizing heat loss, and so on, call and get professional advice from representatives of the Technodom company.

Prices for gas boilers using bottled gas (from a cylinder) differ from traditional heating boilers, but it is still profitable when it comes to heating a private home where there is no main gas supply. It is very easy to buy a boiler using liquefied bottled gas in the Technodom online store, as you only need 1 click.

Modern industry produces a range of household heating boilers using various types of fuel. In this article we will talk about the advantages and disadvantages of using a mixture of hydrocarbon gases (LPG) for heating. The design of all boilers that use flame to heat water is basically the same. Firebox, chimney, water tank, automation, that’s the whole list. The main difference is in the firebox.

LPG boilers use special burners that are so similar to natural gas burners that boiler manufacturers produce the same boilers with different burners. Diesel fuel can also be used in these boilers, but the burners are replaced with nozzles.

Fuel selection

The most important criteria for choosing fuel for heating a home are price, which will have to be paid every year and the cost of constructing the structures necessary to maintain the optimal temperature. The latter include not only pipes, boilers and external networks, but also investments in insulation of walls, floors, ceilings, triple glazing and other measures, reducing annual costs.

This reduction applies to any type of fuel and is very important in our unstable times. And how much you can save on such events can be seen when viewing official documents. In Russia, since 2000, the thickness of the external walls of residential buildings, according to SNiP, has been increased from 65 cm to 77 cm. In Izhevsk, the calculated standard for thermal energy consumption for heating for two-story houses built in 1999 and earlier is equal to 0.029 Gcal/sq.m. per month and for new houses it is only 0,011. That is, residents of old houses must pay for heating 2.6 times more than owners of apartments in houses with thicker walls. The picture is similar in other cities, the payment rules are the same.

Average annual costs for heating houses

The table shows the approximate ratio of annual costs for various types of fuel for heating houses in the central zone of the European part of Russia (heat consumption standard 0.02 Gcal/sq.m. per month or 0.24 Gcal/sq.m. per year).

Fuel	Unit of measurement	Heat of combustion (Gcal)	Boiler efficiency %	Price (thousand rubles)	Cost ratio %
Diesel fuel	thousand l	7,5	90	32	100
Electricity	kWh		98	0,002−0,004	50 - 100
Liquefied gas	T.	10,8	92	23−25	49 - 53
Fuel oil	T.	9,7	90	14 -15	34 - 36
Firewood	cubic meters	2,0 - 2,5	50	1,5 - 2,0	32 - 34
Coal	T.	5,8 - 6,4	60	4,0 - 5,0	24 - 27
Peat	T.	2,9	60	1,3 - 1,6	16 - 19
Natural gas	thousand cubic meters m.	7,9	92	4,0 - 5,0	12 - 14

This table provides an opportunity to approximately calculate the amount annual costs for fuel and its required quantity. For example, you have a country house of 120 square meters. m. with liquefied gas boilers. Buy it with delivery for 24 rubles. per kg. Or, approximately 13 rubles. per liter Calculation: 120×0.24: 10.8: 0.92×24 = 69.6 thousand rubles. per year.

Additional costs for different types of fuel

That’s a lot, of course, but peat, coal and firewood require constant human presence during the combustion process, which creates enormous inconvenience or expenditure of additional funds to pay for the work of stokers. Fuel oil is used only in large boiler houses, so costs increase twofold or more.

Obtaining permission to heat with electricity is problematic, if not fantastic. Of all the listed types, natural gas is the cheapest and most convenient in terms of automation, but not all villages have it. And if there is no gas pipeline, and is not expected in the coming years, then of the two remaining types, undoubtedly, liquefied gas wins, but the factor of investment in the construction of additional structures interferes:

For diesel fuel you need a separate room and a container of 2 - 3 cubic meters. m. for storage of stock, all this will cost an additional 25 - 30 thousand rubles.
When using LPG, the boiler can be installed in the kitchen, but a special tank is required, the construction of which will take no less than at 200 thousand rubles. True, by cooperating with neighbors, you can significantly reduce capital costs by installing one tank for several houses.

The big disadvantage is the distance from the organization that supplies liquefied gas; if it is more than 100 km, then the price of fuel increases, and you have to increase the capacity to reduce the number of refills. Sometimes used for heating bottled gas. If your dacha is small, mainly used in summer, but occasionally visited in winter, a liquefied gas boiler is very convenient.

In case of not very severe frosts, for heating a house of 50 square meters. m. for 3 days one 40 liter cylinder is enough. Gas costs are higher by 20−30% and there should be antifreeze in the heating system, but there is no need for an expensive reservoir. You can connect cylinders into a group; the rules allow up to 15 pieces. V closed metal cabinet, True, such a scheme is used in houses for gas stoves and water heaters, but nothing prevents it from being used for heating.

How to choose a gas boiler and not make a mistake

The main criterion is power. In the boiler passport, and often in the name itself, it is indicated in kW. Often indicated heated area in sq. m., usually its value is 9-10 times greater. For example, AOGV-11.3 with a power of 11.3 kW is designed for heating a building in 100 sq. m. But this is not entirely correct. The boiler will heat such an area, but if there is severe frost for 2 - 3 weeks in a row, the house will very cold.

It is better to install a boiler with a reserve, especially since in a few years you will want to add a warm garage or heat the attic. But the best way is to contact specialists.

Any house is built according to a project, but sometimes in a standard project no heating provided, and installation of boilers, tanks and gas supply pipes is not possible without a project. Pass the data from it to heating designers, the amount of heat load required to heat the house or the hourly heat load, and you will soon receive the necessary criteria for choosing a boiler. Now all that remains is to go shopping and choose between price and appearance. Let's look at the price ranges for some floor-standing boilers running on liquefied gas:

AOGV-29.3 ZhMZ Zhukovsky - power 29.3 kW, price 23,000 tr.
RB -257 RMF Japan - power 29.1 kW, price 42,000 rub.
CNG -35 Germany - - power 34.9 kW, price 64,000 rub.

Features of operation

In conclusion, I would like to dwell on features of LPG operation. A mixture of propane and butane is flammable, and their mixture with air is explosive. In case of leaks, the gas does not escape into the ventilation and vents like methane, and since it is heavier than air, it accumulates on the floor of the premises, so liquefied gas boilers cannot be installed in basements and semi-basements.

It is prohibited to locate an underground LPG storage tank closer than 10 m from houses, and in our small areas this is a problem, since the distance between houses along the street is often less than 20 m.

When burying a gas tank, and this is necessary to avoid condensate freezing, in the depths of the territory there are difficulties with the passage of a refueling vehicle to it. The list of various requirements for the construction and operation of such a tank or group cylinder installation is huge; just listing the names of regulatory documents will take a whole page, so design and installation are allowed to be carried out exclusively specialized organizations, and then, before starting the gas, it is necessary to conclude a maintenance agreement. It can be arranged with the LPG supplier or with the nearest company servicing gas pipelines.

Wall boilers They are produced mainly with a hot water supply circuit - so-called double-circuit boilers, but their price is usually much higher. In this case, it may be better to install a gas water heater in the kitchen, especially since if such a boiler fails, you will be left without heat and without hot water.

A gas boiler is one of the most affordable, efficient and economical heating methods. To heat a house, apartment, or warehouse, you can choose a suitable model. Blue fuel in Russia is much cheaper than electricity. The only drawback of the technology was the need to connect to the main line. But a liquefied gas boiler does not require a network connection, so it is accessible to everyone.

How does a cylinder boiler work?

The massive construction of country houses leads to difficulties with connecting the gas main. But this is not the only reason why propane boilers are in demand:

The difference in the price of propane and centralized gas is not so significant.
When gas is burned, only carbon dioxide is released.
The security system monitors the operation of the device, preventing breakdowns.

The operating principle of both systems is practically no different.

Liquid gas equipment has the appearance of a rectangular steel body, which looks stylish and modern. Inside there are the following elements:

burner;
radiator;
adjustment system;
security system.

Propane boiler diagram:

The burner also ignites automatically or uses electric ignition. The only difference is the diameter of the nozzles. In this case, the holes are narrower to compensate for the greater pressure in the cylinder.

For your home, you can use a double-circuit and single-circuit unit. A device with two circuits is designed for heating and hot water supply (DHW). One circuit can only be used for heating.

Depending on the type of installation, there are wall and floor models. Each of them must be connected to a stationary or coaxial chimney. Equipment with a closed chamber takes air from the street. An open chamber requires good ventilation in the room to maintain the flame in the burner.

How to calculate fuel consumption

When choosing, the question arises: how much propane is needed to heat a house? The operating instructions, which indicate the characteristics of your model, will help you make accurate calculations.

It turns out that devices running on butane emit three times more energy. In this case, the gas is not necessarily stored in cylinders. These can be large tanks with a capacity of several thousand kilograms. They are installed in basements.

Let's take the averages. To heat an area of 100 m² with normal thermal insulation, the consumption of propane gas will be 2 cylinders for 7 days. For one month you will need 9–10 cylinders. To avoid frequently changing containers, a two-arm collector is used. 10 containers are connected to it simultaneously.

Can a regular gas boiler run from a cylinder?

Propane appliances are produced by domestic and foreign manufacturers. There are combined models that successfully connect to a common highway and, if necessary, switch to liquefied fuel.

You can modify the heating circuit by replacing the burner or nozzles. Of course, not all models can be converted to liquefied gas. The device should operate stably at a pressure of 3–4 mbar. The gas valve should flow up to 1.8–2 m³ per hour.

Condensing type boilers are great for conversion. Their already high efficiency will increase thanks to bottled fuel.

How to reconnect your device

Change the injectors or cartridge (depending on the model).
Connect a reducer that will reduce the pressure in the system. If the installation includes several tanks, each can have its own gearbox.
Change the bypass valve if it does not suit the new system.
When connecting 10 to 15 containers, use a special ramp. The organization is carried out either through separate gearboxes or through converters. As soon as one tank runs out of contents, the system will automatically switch to the next tank.
Adjust the settings so that the device “adjusts operation” for propane. To do this, select G31 in the settings.

During operation, adhere to the following requirements:

The tanks must be located in a separate room from the boiler or outside in a closet. The distance from the device is at least 2 meters. Additionally, the cabinets are insulated with a layer of thermal insulation to prevent the containers from freezing.

If you do not refill the tanks immediately, store them outside the building.
Carefully monitor the remaining fuel quantity. Complete elaboration of content is prohibited. A leak test is carried out every four years.

It is equally important to store gas containers correctly. If you decide to make a supply of cylinders, then place them in a separate room at a distance of 10 meters from a residential building. The room must be well ventilated and not have a basement. Propane is heavier than air, so if there is a leak, it will pool at the bottom. Under unfavorable conditions an explosion will occur.

Features of choice

Have you decided to buy? Then consider several criteria. It’s better to decide on some before going to the store.

Type of installation and number of circuits.
Efficiency. Convection devices achieve an efficiency of 90–95%, and condensing devices - 100–107%.
Power and performance. Calculations are carried out individually for each room.
Manufacturing company. We recommend choosing proven brands that provide reconnection: “ ”, “ ”, “ “.

Advantages and disadvantages of propane technology

Like any appliances, liquefied propane gas boilers have their pros and cons.

Advantages:

Low price of gas compared to electricity.
High efficiency.
Easy connection.
Environmental friendliness. When produced, carbon dioxide is converted by plants into oxygen.

Flaws:

The need for constant monitoring of the balance in the container.
Propane costs are rising, and you'll also have to pay shipping.
The room must have good ventilation.
Refilling and replacing the container is done manually.
If you intend to re-equip the device, then the cost of a new burner will be 30–40% of the boiler price.

Popular models

As we have already written, there are boilers with automatic switching to another type of fuel. Let's consider several options.

ZhMZ AOGV-29-3 Comfort N

The floor-standing unit is capable of heating a room up to 250 m². Uses a combined type of fuel: liquefied gas - 2.17 kg/hour, natural gas - 3.18. This is a single-circuit device, so you can only rely on the heating function. But it is also presented with dignity: power is 28.9 kW, efficiency reaches 89%.

The advantage of -29-3 is that it is independent of electricity. Mechanical control is easy to operate. The combustion chamber is open, so a connection to a stationary chimney is required.

An external thermometer records the temperature in the room and adjusts the operation of the device. Gas control protection monitors to prevent fuel leakage. Dimensions: 420x1050x480 mm.

Cost - from 26,000 rubles.

Bosch Gaz 4000 W ZWA 24-2 K

The double-circuit device will provide hot water to the domestic hot water system and pipes over an area of 250 m². Compact dimensions (400x750x355 mm) and a hinged housing allow the model to be placed in any non-residential premises. It is necessary to ensure ventilation, because the Bosch Gaz 4000 W ZWA 24-2 K has an open combustion chamber.

Thermal power is 24 kW. Fuel is used in bottles and mains. A bithermal copper heat exchanger simultaneously heats water for both circuits. Control is represented by an informative display and convenient controls. Built-in self-diagnosis function.

Interestingly, the equipment is equipped with a remote controller. For example, it is located in the boiler room, and you can control the modes from home. Moreover, the regulator allows you to set the “Weekend” mode. When you are not at home, the device maintains the optimal temperature. And by the appointed time it raises it to a comfortable level.

The water in the circuit circulates forcibly thanks to the pump. The security system includes: an 8-liter expansion tank, draft, overheating, ionization sensors, and a pressure relief valve.

Price - from 31,000 rubles.

Wolf CNG 35

Floor heating equipment has an original design. German manufacturers decided to do without a control panel, equipping the CNG 35 with technical features:

Operates on liquid propane/butane (3.03 kg/h), switches to main gas (4.72 cubic/h).
Connects to a low temperature system.
Equipped with one circuit with a cast iron heat exchanger.
The combustion unit is cooled with water.
Cast iron burner.
The efficiency reaches 93.5%.
Combustion products contain a minimal amount of harmful substances. For this, Wolf received the environmentally friendly Blue Angel label.
Power 34.9 kW.
Mandatory connection to the smoke exhaust shaft, open chamber.
The indication informs about the startup and shutdown of the device.

Dimensions: 660x835x860 mm.

Cost - from 87,000 rubles.

When choosing combined equipment, you can connect to a common line or switch to propane tanks at any moment. To do this, just switch the mode and replace the nozzles. It is important to follow safety precautions and take into account the costs of delivering cylinders.

Installing gas appliances is always a risk. But if you use it wisely, then this risk is justified. Make purchases from trusted dealers.

Despite the fact that gas heating is the cheapest and most convenient option for heating premises, in Russia there are still non-gasified settlements where homeowners have to heat their homes with wood, coal or fuel oil. If your house or cottage also does not have a gas pipeline, you can quickly solve the problem using a liquefied gas heating system.

In this article:

Economic feasibility of switching to LPG

To assess economic efficiency, you can use the method of simply comparing liquefied gas with other types of fuel.

Natural gas, coal and wood can be discarded, although they are considered the cheapest. The problem is that it is the lack of natural gas that forces homeowners to purchase liquefied gas, and coal and firewood cause too much trouble, reducing all the benefits of saving “no”.

Let's compare the monetary costs of heating a private house with an area of 300 square meters. m.

The prices indicated in the table may change, but their ratio remains the same.

As you can see, the cost of heating a private house with liquefied gas is significantly lower than if you used alternative heat sources for these purposes. You can find out how much gas the boiler consumes from the device’s passport, and how much gas heating will cost you - on your own, armed with it.

Advantages

LPG can be used in any area. If the system is properly organized, the change of seasons will not affect the heating autonomy of the building in any way.

Autonomous heating of a private house with liquefied gas

From an environmental point of view, gas heating is second only to electric heating in terms of environmental cleanliness. Liquefied gas is devoid of all the disadvantages that are inherent in solid fuels– dust, burning, smoke.

And, most importantly, the durability of the system, which is due to low wear and tear of the equipment.

Flaws

You can't do without negative points:

the greater the boiler power, the more often you have to worry about replenishing fuel reserves;
at low temperatures, not the entire volume of gas is produced;
gas cylinders are a source of increased explosion and fire hazard.

Operating principle of liquefied gas boilers

Propane or butane is used for heating.

The gas, liquefied under high pressure, is placed in a container that is connected to a reducer (this device reduces the pressure). The drop in pressure causes the gas to revert from the liquid phase to the gaseous phase. In this state, it enters the heating boiler, where it is burned.

Boilers designed to operate only on LPG are not produced.

Pay attention to an important parameter of the boiler - it must be able to operate at low pressure (3 to 4 mbar). At the same time, the efficiency of the boiler must be high, otherwise heating ceases to be cheap, and therefore economically profitable.

Otherwise, the choice depends on the tasks assigned to the equipment:

if the boiler is intended only for heating, you can purchase a single-circuit one;
if it must simultaneously provide the house with hot water supply, take a double-circuit one ().

Device connection rules

It is necessary to firmly understand the following rule: the boiler cannot be connected to a source of liquefied gas (gas holder or cylinder) without switching it to this type of fuel. Otherwise, too much gas entering through large-diameter nozzles can lead to equipment failure or even an explosion.

Converting a heating boiler to a gas boiler is carried out by replacing the standard burner nozzle with a sprayer with a smaller diameter.

Many models of gas boilers are equipped with such nozzles. The sprayer, like the burner, can be purchased separately. On some models, the gas valve also has to be replaced.

The gas cylinder is connected to the boiler through a special reducer, providing gas consumption of 1.8 - 2 cubic meters per hour. Conventional gearboxes are designed for only 0.8 cubic meters / hour, so they are not suitable for LPG.

If your device has two circuits, to connect .

Security requirements

LPG cannot be stored in houses with pits and basements

Liquefied gas is considered quite safe, but only if certain safety measures are taken:

Do not leave LPG containers in the sun;
LPG storage tanks must be in good working order;
the air temperature in the room where the cylinders are located should not exceed 45°C;
Cylinders should not be placed in close proximity to radiators and gas stoves;
It is strictly prohibited to store gas containers in buildings with basements and pits. Propane is heavier than air, and if it leaks, it can accumulate in dangerous quantities at lower building elevations, which can lead to an explosion.

How to store fuel

Storage of LPG is allowed in cylinders, mobile and underground gas tanks.

Gas cylinders together with the collectors, they are placed in special steel boxes that can be mounted against the wall of the house, but under one condition: the fire resistance of the wall must be at least class III.

The maximum permissible quantity of LPG in boxes is no more than 600 liters. When heating small buildings, 1-2 cylinders are allowed to be installed inside the house.

For heating a small private house or cottage, it is more productive to use mobile gas tanks.

The installation is a container with liquefied gas pumped into it (minigas holder), which is attached to a car trailer. The container is equipped with a heating system, which is part of the general heating system. Mobile gas tanks are placed at a distance of 10 meters from a residential building.

Used for heating large houses stationary gas tanks– tanks with underground installation. Undoubtedly, this is the best option for providing a heating system with gas. The container immersed in the ground does not require additional heating, and its volume can be selected so that one refill is enough for a whole year.

Minimum distances from underground LPG storage to a residential building:

10 meters - with a gas tank volume of 3 to 10 cubic meters. m;
15 meters - with a container volume of 10 - 20 cubic meters. m;
20 meters - with a gas tank volume of 20 - 50 cubic meters. m.

Owners of private houses can purchase liquefied gas at the nearest gas station. But “close” does not always mean “good”: there are cases where people purchased cylinders with an unacceptably high water content. So sometimes it’s better to go further, but you will buy high-quality LPG.

If you want to control the temperature at home while being in another place (for example, at work), we recommend purchasing.

And for uninterrupted operation of the boiler you will need a power supply

Go to see diagrams for tying a heating boiler with polypropylene.